Thermal Engineer - Nuclear Microreactors | Fast Startup

Radiant Industries; El Segundo (CA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Stock options

Health insurance

One Medical

Vision insurance

Dental insurance

Voluntary benefits

Parental leave

Lunch provided

Flexible PTO

In-person events

Job summary

Radiant, based in El Segundo, CA, is seeking a highly motivated Thermal Engineer to drive thermal analysis and CFD for Kaleidos systems. The role focuses on documenting results, expanding CFD capabilities, and building geometry pipelines from CAD, with a strong preference for independent problem solving in a fast-growing startup.

The ideal candidate has a relevant engineering degree and is graduating soon, with a keen interest in deploying nuclear microreactors to remote, energy-demanding sites.

Qualifications

• BS or MS in Chemical Engineering, Mechanical Engineering, Aerospace Engineering, or related discipline.
• Graduating in December 2026 or Spring 2027.
• A high level of independence in solving challenging engineering tasks is preferred.
• Ability to seek out resources and proactively ask questions to finish projects through completion effectively, accurately, and timely.
• Ability to work in a fast-paced startup environment with a proactive and collaborative attitude.
• Genuinely excited for our mission to rapidly deploy nuclear microreactors to remote locations requiring abundant, clean energy.
• Knowledge of reactor physics will provide useful context but is not necessary.
• Prior internship experience helpful but not required.

Responsibilities

• Develop and execute thermal analysis and CFD to evaluate design and performance of Kaleidos systems.
• Document analysis results to communicate clear and actionable outputs.
• Expand CFD capabilities, accuracy, and efficiencies via methods and workflow development projects.
• Own pipeline for producing analysis geometry from mechanical design CAD
• Develop methods and calculations to support and build confidence in lower-fidelity thermal analysis methods.

Skills

Independent problem solving

Proactive communication

Startup environment adaptability

Mission-driven

Team collaboration

Curiosity to learn

Attention to detail

Fast-paced work style

Education

B.S. or M.S. in Chemical/Mechanical/Aerospace Eng

Job description

Radiant, based in El Segundo, CA, is seeking a highly motivated Thermal Engineer to drive thermal analysis and CFD for Kaleidos systems. The role focuses on documenting results, expanding CFD capabilities, and building geometry pipelines from CAD, with a strong preference for independent problem solving in a fast-growing startup.

The ideal candidate has a relevant engineering degree and is graduating soon, with a keen interest in deploying nuclear microreactors to remote, energy-demanding sites.